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Positioning the instances in Layout editor by using SKILL

RFStuff

 Dear All,

I am trying to place copies of an instance/object ( say a simple via ) with 'x' distance separation in X-direction.

Is there any in-built feature already available in IC5141 ?

Otherwise, is there any solution ( SKILL script) already posted in the forum ? I searched but couldn't find so.

The code needs three functions:

1) Find the cordianate of the OBJECT/INSTANCE ( this I have already found in the Forum)

2) Copy the object. For this what is the SKILL function ?

3) Paste the desired distance separation ( For palcing wht is the simple SKILL function)

Couls anybody please tell regarding this.

Kind Regards,

 

 

  • RFStuff

    Dear Andrew,

    You are right. The centre of the object means the center of the "bBox".

    I rechecked and the pitch is being kept same from bBox to bBox.

    By the way, I actually could not understand why one needs to transform the point in a cellview as the point is already known.

    Basically, what good transformation does ?

    Kind Regards,

     

  • Andrew Beckett

    I don't entirely understand what you're saying, because previously you said that the xy point had to be found, and so presumably was not "known".

    You're asking here to shift the shapes by a fixed offset - that's a transformation. You're asking to flip them - that's a transformation. So you need to do transformation if you want them to be moved or flipped or rotated, and if you don't adjust the transformation to take into account the point about which you wish to rotate/flip, the chances are it won't do what you want.

    For example, in the picture below, I did:

    dbCopyFig(car(geGetSelSet()) geGetEditCellView() list(5:3 "MY"))

    I started with the green "F" selected, and it generated the pink "F". Then I selected the pink "F" and did the same copy - i.e. the same transformation - and got the  red F.

    What's happening is that it does the orientation part of the transformation around the origin (where the white cross is), and then  applies the translation (the first argument). So in this case it is doing a mirror around the Y axis, then moving 5 to the right and 3 up.

    If instead you want to rotate/flip around somewhere other than the origin, you need to compute the overall transformation, where you first shift the shapes such that the point you wish to rotate/flip about is at the origin, you do the rotate/flip, and then you shift back again. 

    Is that clear? I still don't get what you're asking though...

    Regards,

    Andrew.

  • RFStuff

     Dear Andrew,

    Thanks for the nice explainations.

    Kind Regards,

  • Andrew Beckett

    That was a quite impressively delayed response - almost 18 months after my reply!

    Andrew.

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